计算机工程 ›› 2013, Vol. 39 ›› Issue (5): 301-304.doi: 10.3969/j.issn.1000-3428.2013.05.067

• 开发研究与工程应用 • 上一篇    下一篇

基于多核平台的长期演进信道估计器设计

贺茂飞,于学球,张家杰,俞 政,虞志益   

  1. (复旦大学专用集成电路与系统国家重点实验室,上海 201203)
  • 收稿日期:2012-07-12 出版日期:2013-05-15 发布日期:2013-05-14
  • 作者简介:贺茂飞(1987-),男,硕士研究生,主研方向:无线通信;于学球、张家杰、俞 政,硕士研究生;虞志益,副研究员
  • 基金项目:
    国家自然科学基金资助项目(61103008);国家科技重大专项基金资助项目(2011ZX03003-003-03);上海市科委集成电路专项基金资助项目(10706200300);上海市青年科技启明星计划基金资助项目(11QA1400500)

Design of Channel Estimator for Long Term Evolution Based on Multi-core Platform

HE Mao-fei, YU Xue-qiu, ZHANG Jia-jie, YU Zheng, YU Zhi-yi   

  1. (State Key Laboratory of ASIC and System, Fudan University, Shanghai 201203, China)
  • Received:2012-07-12 Online:2013-05-15 Published:2013-05-14

摘要: 设计一种基于多核平台的长期演进下行链路信道估计器。对任务进行划分,分解为多个子任务,根据子任务之间的相对通信量,将子任务映射至13个处理器核上,综合运用共享内存及NoC消息传递2种方式进行核间通信,实现多核协同工作,并使用扩展的寄存器堆文件、SIMD数据通路特性、平衡单核计算负载量等方式优化设计。性能分析结果表明,该信道估计器可达到678 Mb/s的吞吐率。

关键词: 信道估计器, 多核处理器, 长期演进, 核间通信, 并行计算, 多核访存策略

Abstract: This paper presents a channel estimator based on multi-core platform for Long Term Evolution(LTE) downlink. This design partitions task into various sub tasks, and then maps subtasks onto 13 different cores by the relative inter-core communication traffic. The integration usage of shared memory and NoC message transfer are 2 ways for inter-core communication, as to realize multi-core collaborative work. By using the extended register file, SIMD data path characteristics and balanced single core computation load. Performance analysis result shows that this channel estimator can achieve a throughput of 678 Mb/s.

Key words: channel estimator, multi-core processor, Long Term Evolution(LTE), inter-core communication, parallel computation, multi-core memory access strategy

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